The Sea Inside

may be vermin to most people, but I’ve come to love carrion crows. Sleek and knowing and iridescent, they could be in disguise for all I know, glossy agents sent to spy on us. If I were to die here on the beach, it would be the crows who picked my bones clean.
    Even on this nondescript stretch of water the colonisation continues: the annual invasion arriving over here, and the annual exodus leaving for over there. Around now the dark-bellied brent geese appear from Siberia; one-tenth of the world population winters along this coast. For them, Southampton Water is one big runway. Travelling three thousand miles in six weeks, they’re long-haul flyers, built to purpose with compact bodies, sturdy ringed necks and neat dark heads. I hear their rolling honk as they pick their moment to settle, their voices eliding and trilling like the chorus from a minimalist opera. Even their name sounds northern: ‘brant’ is Norse for burnt. As the tide flows, they will ride the surf like little ships, proud of their survival, joining the herring and black-headed gulls hunkering to the swell; at this time of year, the air is colder than the sea.
    This international, modest gathering of birds – constant and ever-changing, unremarkable and exquisite – are united only in their search for sustenance. I have to remind myself that they’re not here for my entertainment. They choose this part of the shore because it is a fertile patch, fed by a freshwater stream that oozes from the woods, turning brackish in a holding pond before running clear to the sea, and with it the nutrients that feed whatever the birds feed on.
    They’re always waiting for the tide to go out; I’m always waiting for it to come in. Time may move faster for them – a day to them is a month to me; they live ten lives to mine – but they’ve been here for generations. This is their refuge. They feel safe here, despite the bait-diggers who disturb their foraging and the heavy metals and organochlorines that pollute their food and threaten their fertility. They remain loyal to these blackened flats; northern animals, like me; philopatric-, home lovers. They were here before Jane Austen came to visit the abbey’s ruins, and before the Romans rowed up the river to establish their own colony.
    We should pay attention to birds, says Caspar Henderson; ‘being mindful of them, is being mindful of life itself’. They have always surrounded us; our movements mirror theirs. For humans, this too is a place of migration and emigration: from the tribes who came here when the sea was still a river, to the post-war ‘ten-pound Poms’ sailing for Australia – among them my school friends, never to be seen again – to the Filipinos, Poles and Bangladeshis who constitute the city’s latest arrivals.
    What if all the vessels that ever sailed this water rose up from this much-dredged ditch? Celtic coracle, Roman galley, Norse longship, Tudor barge, Victorian merchantman, interwar liner, twenty-first-century ferry, all tumbled together like Paul Nash’s painting of dumped war planes,
Totes Meer
, Dead Sea. Sometimes the trawlers spit out fragments. I’ve found rusting revolvers brought back by wartime troops and chucked overboard when they were forbidden to import their souvenirs. Two thousand years before, their Celtic counterparts cast offerings to the water gods, and Roman centurions tossed tokens to Ancasta, the river deity who lived in this estuary. It all lies there, entire worlds of marine archaeology awaiting excavation; crockery and weapons and bones piled in a watery midden.
    Out of the calm there’s a sudden surge as if some invisible vessel had passed by, followed by a reluctant riffling, running over stones as waves first set in motion thousands of miles away spend themselves on the shore. The sea plays its own tricks here. For two hours or more, its height and weight is suspended in a delayed action produced by the Atlantic pulse, although I must admit that the logistics of this mechanism somewhat mystify me.
    If I understand it correctly, the tide runs from west to east and back again, courtesy of the pull of the moon, rocking up and down the Channel like a seesaw. Set at its midpoint, Southampton’s tide bounces back up its estuary. But added to this are local complications. The stopper of the Isle of Wight creates further oscillations, as the water enters and leaves from either side. The result is a unique selling point for the port. For centuries